Translucent status bar in Android

问题

I am using the following layout (main_activity.xml)

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

<android.support.v4.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/text_margin"
        android:fitsSystemWindows="true"
        android:text="@string/large_text" />
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

With the following styles-v21

<resources>
<style name="AppTheme.NoActionBar">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
    <item name="android:windowDrawsSystemBarBackgrounds">true</item>
    <item name="android:statusBarColor">@android:color/transparent</item>
    <item name="android:windowTranslucentStatus">true</item>
    <item name="android:windowTranslucentNavigation">true</item>
</style>
</resources>

But I still cannot archive a transparent status bar

It look like this

But I want something like this (New Google Newsstand App)

Note: I am using

compile 'com.android.support:appcompat-v7:25.1.1'
compile 'com.android.support:support-v4:25.1.1'
compile 'com.android.support:design:25.1.1'

回答1:

try this:

add this in your app theme:

<item name="android:windowTranslucentStatus">true</item>
<item name="android:windowTranslucentNavigation">true</item>

Set android:fitsSystemWindows=”true” to root container

Now in your activity onCreate():

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        Window w = getWindow();
        w.setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
    }

Updated, Result:

you can make the snackbar draw on top of screen:

Snackbar snack = Snackbar.make(parentLayout, str, Snackbar.LENGTH_LONG);
View view = snack.getView();
FrameLayout.LayoutParams params =(FrameLayout.LayoutParams)view.getLayoutParams();
params.gravity = Gravity.TOP;
view.setLayoutParams(params);
snack.show();

For more info see here

回答2:

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Window window = getWindow();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            window.setStatusBarColor(Color.TRANSPARENT); } }

}

Use this in your activity. But changing the status bar color is only allowed after android L

回答3:

The code below is making the status bar transparent but navigation bar opaque for API21+.

NOTE: you shouldn't be setting android:fitsSystemWindows="true".

override fun onCreate(savedInstanceState: Bundle?) {
      setupContentWindow()
      super.onCreate(savedInstanceState)
      setContentView(R.layout.activity_main)
}

fun setupContentWindow() {
    window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
    window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
    window.statusBarColor = Color.TRANSPARENT
    window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
}

回答4:

Add these two lines in the onCreate of the activity that you want its layout status bar to be transparent

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
getWindow().setStatusBarColor(Color.TRANSPARENT);
}

No need to change your app theme or xml layout. In doing this your bar doesn't have to be transparent throughout your whole app if you don't want to.

回答5:

Please remove this line from your CoordinatorLayout:

android:fitsSystemWindows="true"

Edited, Result:

来源：https://stackoverflow.com/questions/42313382/translucent-status-bar-in-android